When the bearing is placed on the customer's hand, under the premise that the quality of the bearing and the bearing handling process are guaranteed, the factor that most affects the use of the bearing at this time is the existence of installation defects.

There are various reasons for installation defects. One is that for bearings such as precision bearings that use lubricating oil, they are not cleaned before installation, so there are foreign objects in the bearing during installation; the other is that the cleanliness of the bearing installation environment is not high, which will cause dust, etc. Intrusion into the bearing; third, improper installation caused by improper selection of the interference when using interference fit and other methods for the bearing; fourth, the bearing was not inspected in time after installation.